SAN FRANCISCO -- Tim Lincecum is in search of a fresh start, and the journey began in a barber's chair.

A day before FanFest at AT&T Park, Lincecum showed off a new, short haircut and said he's looking to put a rough 2012 season in the past.

"Last year was a tough one to swallow, but I got through it," Lincecum said. "Coming to the field today and being around all these guys, it's kind of hard not to be positive. You feel like anything can happen."

General manager Brian Sabean compared Lincecum's look to that of late singer Buddy Holly, but Sabean called the look "very professional."

Lincecum estimates he put on 8-10 pounds since the Giants won the World Series with their longtime ace serving as a jack-of-all-trades reliever. He's looking forward to getting back in the starting rotation and said he feels he will be "more explosive" this season.

Lincecum's weight has fluctuated in the past and he put on 30 pounds in 2011 before dropping it all before the 2012 season. The result was a mechanical mess.

This offseason, Lincecum hired new trainers and did different workouts, using sleds, kettlebells and rubber bands to get back into the kind of shape he was in while winning two Cy Young Awards.

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"It's the way I put on the weight," Lincecum said. "Pound for pound, I feel like I'm back where I can be."